From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Piston testing for a dismantled engine unit from chassis No.B.72.BN.
| Identifier | ExFiles\Box 89\3\ scan0010 | |
| Date | 13th August 1936 | |
| K.{Mr Kilner} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}6/MJ.13.8.36. We understand that you have dismantled the engine unit from the chassis No.B.72.BN.{W.O. Bentley / Mr Barrington}, which is going to be sold to Mr. Cunningham. As this unit is going to be fitted with the high compression cylinder head we consider you should short test the pistons and examine them carefully, particularly with regard to the top of the gudgeon pin bosses, to ensure that no cracks have taken place. We believe you chalk test pistons as we do at the factory which is the best way of observing signs of failure. Should any cracks be discovered in these pistons they should be replaced by a set of Aerolite. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||